Page 93 - Physical activity in recipients of solid organ transplantation - Edwin J. van Adrichem

Discussion
in
Physical activity in recipients of solid organ transplantation

is study showed that the Barriers and Motivators Questionnaire has a multidimensional
structure in regard to recipients of solid organ transplantation. A four-component structure
was supported for the barriers section, which explained 28.9% of the variance.

e internal
consistency of the components ranged from acceptable to questionable.

e motivators’
section also demonstrated a four-component structure, explaining 43.3% of the variance.
Internal consistency of the motivator components ranged from good to acceptable.

e components derived from the barriers scale identi
cover a meaningful construct to be measured.

ed well interpretable subscales of
barriers. Items clustering within the same component all related well to each other and
e

rst three barrier components exhibit
acceptable internal consistency which indicates reliable scales.
e
barrier component ‘lack
of motivation or time’ had a ‘questionable’ internal consistency.

is is likely a re

ection of
the component existing of two related but slightly di

erent constructs: lack of motivation
(‘preferring to spend time doing other things’, ‘lack of interest’, ‘lack of motivation’) and
lack of time (‘lack of time’, ‘physically demanding job’).
All four components derived from the motivator scale have an acceptable internal
consistency and represent reliable scales.

ree of the four components contain consistent
questions within the component and represent ‘health and physical outcomes’, ‘external
5

uences’, and ‘psychological outcomes’. One component is composed of diverse questions
regarding ‘group activity’ and ‘

nancial resources’ and, therefore, must be interpreted with
caution when emerging from the questionnaire. When this component is highly salient in a
Moti
vator 1: he and physical outcomes
alth
Motivator 2: external in uences
Motivator 3: group activities
Motivator 4:
psychological outcomes
NS .037 -.063 NS -.089 .051
-.597 -.293
-.353 -.185
-.127 .113
-.634 -.231
-.391 -.122
-.509 -.344
-.265 -.235
.244 .109
91.